【正文】 To figure out how quickly trees were growing, researchers tracked their diameters (the width of their trunks) between 2005 and 2014. A tree39。Studies had shown forests readily absorb CO2, but there hadn39。 可知，本文主題是“衛(wèi)星首次收集太空垃圾”。故選B。 （3）考查詞義猜測。根據(jù)第六段中的“...,said that an operational version of the RemoveDEBRlS technology would cast a net that remains fastened to the main satellite so the debris can be dragged out of orbit. It could target large pieces of junk, including dead satellites up to 10 meters long.“該公司表示，一種操作性版本的RemoveDEBRlS技術(shù)將會在主衛(wèi)星上撒網(wǎng)，這樣碎片就可以被拖出軌道。根據(jù)第一段中“...,imitating a technique that could one day collect spaceborne garbage.”模仿一種有一天可以收集太空垃圾的技術(shù)。Why the RemoveDEBRIS Satellite Is InventedD.Provide.（4）What39。Support.By dragging satellites up to 10 meters long.D.D.Collecting wastes existing in space.Demonstrating space technology.There are still enormous barriers to clear before operational cleanup tasks are underway, he said, and the most discouraging is figuring out how to fund such projects.The RemoveDEBRIS satellite will conduct a few more experiments in the ing months, including testing navigation features that could help guide the satellite to a specific piece of debris.Jonathan McDowell, an astrophysicist at the HarvardSmithsonian Center for Astrophysics, said the success of this week39。 The RemoveDEBRIS experiment is run by a pany and researchers led by the U. K.39。 An experimental cleanup device called RemoveDEBRIS has successfully cast a net around a dummy (仿真的) satellite, imitating a technique that could one day collect spaceborne garbage. 【點評】本題考點涉及細節(jié)理解，詞義猜測和推理判斷三個題型的考查，是一篇科技類閱讀，考生需要準(zhǔn)確掌握細節(jié)信息，并根據(jù)上下文進行邏輯推理，從而選出正確答案。故選B。首先,有創(chuàng)造性的工作。根據(jù)第二段中的“Because AI can outperform humans at routine tasks—provided the task is in one field with a lot of data”可知AI可以在日常任務(wù)中outperform人類（前提是該任務(wù)在一個涉及到大量數(shù)據(jù)的領(lǐng)域中；以及“it is technically capable of replacing hundreds of millions of white and blue collar jobs in the next 15 years or so.”可知從技術(shù)上講,人工智能具有在未來大約15年里取代成千上萬的白領(lǐng)和藍領(lǐng)工作的能力。其展示了人工智能是如何工作的。 （1）考查推理判斷。Apply for the donation from panies.D.D.The babysitter.D.B.s feat.C.再根據(jù)最后一段中的“The next step in the research will be to test RAS39。 （3）考查推理判斷。根據(jù)章第二段中的“ The Robot Activity Support System, or RAS, uses sensors （傳感器）equipped in a WSU smart home to determine where its residents are, what they are doing and when they need assistance with daily activities”可知機器人活動支持系統(tǒng)（RAS）使用WSU智能家居中配備的傳感器（傳感器）來確定其居民在哪里，他們在做什么以及何時需要日?；顒拥膸椭f明傳感器起到了重大的作用，故選A。Elderly people leave the nursing home.B.Doubtful.D.It can locate people and do any task.Through a mobile robot.Through sensors. Currently, an estimated 50 percent of adults over the age of 85 need assistance with every day activities such as preparing meals and taking medication and the annual cost for this assistance in the US is nearly $2 trillion. With the number of adults over 85 expected to triple by 2050, researchers hope that technologies like RAS and the WSU smart home will relieve some of the financial strain on the healthcare system by making it easier for older adults to live alone.s First Digital Teacher Appears in Classroom最符合本文的標(biāo)題。 （4）考查主旨大意。故選D。 （2）考查細節(jié)理解。根據(jù)第一段中的“They became the world39。The World39。Disapproving.（4）What might be the best title for the passage? A.Unclear.Doubtful.Optimistic.It can change if necessary.（3）What39。It can talk any topic for free.They could get close to smartphone screen.（2）What is the benefit of this twoway interaction? A.B.A digital teacher taught them. Nikhil Ravishankar believes that Willlike avatars could be a novel way to catch the attention of the next generation. He says, “I have a lot of hope in this technology as a means to deliver costeffective, rich, educational experience in the future.” attention, but also allows the program39?！惫蔬xA。s still a lot of work to be done in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction so 5G isn39。故選D。故選C?？芍?，作者在第一段想強調(diào)“5G光速快。The importance of infrastructure construction.【答案】 （1）A（2）C（3）D（4）A 【解析】【分析】本文是一篇說明文，介紹了我們離5G世界越來越近了。How to fully expand 5G coverage.B.t e without AR glassesB.C.Success.The expectation of 5G world.C.t get too excited. There39。s Mobile World Congress how smart glasses could bee faster and lighter with a 5G connection, because instead of being weighed down with ponents, the glasses could rely on hardware for processing power.t yet broken the mainstream, but tech panies are joyfully betting that these devices will eventually replace our smartphones. With 5G, that could actually happen. This is notable because panies such as Apple are reportedly developing AR glasses to assist — or perhaps even replace — smartphones.s lots of data behind that task, which is why we need high speed.故選C。根據(jù)第二段中的I think the potential of AI in healthcare like this is as big as the Industrial Revolution was—and signals a pletely new example in the way we manage healthcare. 楊教授認為，人工智能在醫(yī)療保健領(lǐng)域的潛力與工業(yè)革命一樣大，以此類比，說明人工智能在醫(yī)療領(lǐng)域的影響力。 （2）考查細節(jié)理解。 （1）考查詞義猜測。It helps patients recover earlier.B.To show the influence of AI.B. cases.C.spotfort The technology is the brainchild of Dr Vishal Nangalia, a consultant at the Royal Free Hospital in London. He used AI to analyse a billion stored blood samples from 20 different UK hospital trusts dating back up to 12 years. Computers assess blood test results by picking up subtle changes in red and white blood cells, suggesting a patient is going downhill.s oceans will be, on average, at least 60cm higher by the end of the century.”按目前的速度，世界的海洋到本世紀(jì)末平均至少升高60厘米，選D。 （3）考查細節(jié)理解。故選B。By 2100, the sea level will have risen to a much higher level than now.【答案】 （1）B（2）C（3）D（4）D 【解析】【分析】本文是一篇說明文，南極地區(qū)的拉森C冰架崩解形成了一座巨大的冰山A68 i